I'm just saying that 556's original intent of this thread was probably not an exercise in people's Google/Wiki-fu, and more based on actual knowledge of firearms and the employment of integrity. Bah it's been a long day, end rant.
So I guess the next course of action is to find questions that people cannot Google or Wiki, heh heh.
So lets give it a try:
Why would a gunsmith (or engineer wink wink) put a precision rifle barrel in tension?